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Studies on the Occurrence and Control Measures of Lygus Lcorum Mayer in Jujube in Tianjin Region

Author: LiuTao
Tutor: GaoMeiXiu
School: Tianjin Agricultural
Course: Pomology
Keywords: Jujube Lucorum Occurrence Regularity Harm Integrated Control Technology
CLC: S436.65
Type: Master's thesis
Year: 2010
Downloads: 44
Quote: 0
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Abstract


Lucorum in Dagang District of Tianjin , Jinghai County , Ninghe suburban Zaoyuan distribution , the occurrence of occurrence of the law and life history research , the results showed that : lucorum in Tianjin 5 generations and generational change seriously . Of lucorum activities jujube growing season , with the first generation of nymphs the jujube budding lucorum overwintering eggs begin to hatch , from nymph to adult development takes about 20-30 days , dates head quickly growing season appear first generation of adults. Most of the first generation of adults spawning in jujube bud . Second-generation lucorum nymphs occurred in the early jujube tree flowering , flowering the peak and fruiting period for a large number of the occurrence of a second-generation adult lucorum the fruit -speed long-term ( late June to early July ) to move out of the second generation adults Zaoyuan . Third and fourth generation lucorum nymphs , adults , and the fifth generation of nymphs harm other hosts . The fifth generation adults began to move back to the end of August to early September the Zaoyuan spawning wintering . The overwintering eggs prolific jujube head residues chunks , the the jujube head residual chunks mean egg ratio 29.8% -32.4 % , respectively jujube the stocks average with eggs only with eggs only and bark crevice average of 2.3 % -4.6 %. Therefore , you can cut off the the jujube head residues chunks Clear lucorum overwintering eggs reduce lucorum base . Integrated Control Technology lucorum agricultural control, physical control , chemical control , test results show that the insect net effective lucorum barrier net to reduce the probability of lucorum jujube spawning . The yellow sticky effect adhesion lucorum adult significantly the , blue sticky and armyworms adhesive insects less effective . Sunflower and corn lucorum trapping , combined with chemical control can significantly to kill adult lucorum reduce transferred to the number of adults on the jujube . Chemical control before jujube bud methomyl Granville, cypermethrin, imidacloprid and fipronil to green bugs have better control effect , especially Fipronil diluted 1,000 times , the control efficiency of up to 85 % , the persistence of more than seven days , therefore , it is recommended to use the newer the pharmaceutical Fipronile ( fipronil ) and imidacloprid , methomyl , attention Pharmacy alternating and rotation while in use , so as not to produce anti- potency.

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CLC: > Agricultural Sciences > Plant Protection > Pest and Disease Control > Horticultural Crops Pest and Disease Control > Fruit tree pests and diseases > Miscellaneous fruit pests and diseases
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